[Withdrawn] Characteristics of syllabic compandors for telephony on high capacity long distance systems
Deleted because it deals with compandor transmission aspects, which use is no more recommended in networks

[Withdrawn] Transmission plan aspects of privately operated networks
Deleted because it refers to obsolete Recommendations. For guidance on transmission planning or on private/public network interconnection, refer to ITU-T G.175 and G.108

[Withdrawn] Allowable noise power in the hypothetical reference circuit of trans-horizon radio-relay systems for telephony using frequency-division multiplex
Deleted after its content became technically out of date

[Withdrawn] Allowable noise power in the hypothetical reference circuit for frequency-division multiplex telephony in the fixed-satellite service
Deleted after its content became technically out of date

[Withdrawn] Interconnection of a maritime mobile satellite system with the international automatic switched telephone service; transmission aspects
Withdrawn because it provided transmission planning information that was obsolete and no longer used

Characteristics of a 50/125 µm multimode graded index optical fibre cable
ITU-T G.651 was withdrawn on 2008-08-16, its content having been obsoleted by the new ITU-T G.651.1 on multimode fibre applications in optical access networks

[Withdrawn] Separate performance characteristics for the encoding and decoding sides of PCM channels applicable to 4-wire voice-frequency interfaces
The content of this Recommendation is now covered by ITU-T G.712

Digital circuit multiplication equipment using G.726 ADPCM and digital speech interpolation
This Recommendation includes 2 diskettes. The first one contains A-Law and m-Law test vectors for DCME verification. The second one contains example transmit/receive SDLs.
Covering note, May 2000: Erratum

[Withdrawn] ONT management and control interface specifications for B-PON system with protection features
Deleted on 2006-05-22, the material of ITU-T Recs G.983.6, G.983.7, G.983.8, G.983.9 and G.983.10 having been incorporated in ITU-T Rec. G.983.2 (2005)

[Withdrawn] B-PON ONT management and control interface (OMCI) support for wireless Local Area Network interfaces
Deleted on 2006-05-22, the material of ITU-T Recs G.983.6, G.983.7, G.983.8, G.983.9 and G.983.10 having been incorporated in ITU-T Rec. G.983.2 (2005)

[Withdrawn] B-PON ONT management and control interface (OMCI) support for Digital Subscriber Line interfaces
Deleted on 2006-05-22, the material of ITU-T Recs G.983.6, G.983.7, G.983.8, G.983.9 and G.983.10 having been incorporated in ITU-T Rec. G.983.2 (2005)

Overview of digital subscriber line (DSL) Recommendations
This Recommendation was deleted on 2011-12-16. The material contained in Recommendation ITU-T G.995.1 (2001) is now considered obsolete and this material needs to be updated. Due to the non-normative nature of the revised text, the updated material was agreed as a new Supplement 50 to ITU-T G-series Recommendations.

Phoneline networking transceivers - Payload format and link layer requirements
This text was first approved and published as ITU-T Rec. G.989.2 and then renumbered as G.9952 on 2005-05-27 without further modification

[Withdrawn] Example showing how the total value of line noise specified for the hypothetical reference circuit on open-wire lines might be broken down into its various components
Green Book Volume III.2, page 589

Application of transmultiplexers, FDM codecs, data-in-voice (DIV) systems and data-over-voice (DOV) systems during the transition from an analogue to a digital network
Red Book Fascicle III.3, page 397